Survey Of The Indigenous Predators Of Arecanut Phytophagous Mites
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1979
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Abstract
The results of the survey and ecological studies of the predator fauna of arecanut phytophagous mites are presented. Three species of mites viz: Oligonychus indicus Hirst, Raoiella indica Hirst and Tetranychus fijiensis Hirst infest the leaves of areca palm. Species belonging to Coleoptera, Acarina, Diptera, Thysanoptera, Hemiptera, Neuroptera and Araneida are represented in the predator fauna of these mites. Two species of Stethorus and a staphylinid beetle are the major predators of O. indicus. Other predators of this .spider mite include a phytoseiid mite of the genus Typhlodromus, a chryso-pid, a cecidomyiid, and a species of thrips. The coccinellid Stethorus-keralicus Kapur and the phytoseiid Amblyseius channabasavanni Gupta and Daniel are the key predators of the palm mite R. indica. Other members of the predator complex of R. indica include two genera of cecidomyiids, a chrysopid, an anthocorid and a species of spider. The predator fauna of T. fijiensis include two species of Stethorus, a cecidomyiid, a chrysopid and the phytoseiid A. channabasavanni. Information on the ecology of the major predators are given.
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In: Proceedings, PLACROSYM II, UPASI, Ootacamund. 26-29Jun. 1979. Edited by C. S. Venkataram and others 227-236